Re: [xwiki-users] NullPointerException at HqlSqlWalker.lookupProperty( HqlSqlWalker.java:560)

Here is the root cause: HTTP Status 500 - com.xpn.xwiki.XWikiException: Error number 11007 in 0: Failed to extract Entity Resource Reference from URL [http://localhost:8080/xwiki/bin/view/Main/] type Exception report message com.xpn.xwiki.XWikiException: Error number 11007 in 0: Failed to extract Entity Resource Reference from URL [http://localhost:8080/xwiki/bin/view/Main/] description The server encountered an internal error that prevented it from fulfilling this request. exception javax.servlet.ServletException: com.xpn.xwiki.XWikiException: Error number 11007 in 0: Failed to extract Entity Resource Reference from URL [http://localhost:8080/xwiki/bin/view/Main/] org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:520)

root cause com.xpn.xwiki.XWikiException: Error number 11007 in 0: Failed to extract Entity Resource Reference from URL [http://localhost:8080/xwiki/bin/view/Main/] com.xpn.xwiki.XWiki.initializeResourceFromURL(XWiki.java:821) com.xpn.xwiki.XWiki.getXWiki(XWiki.java:764)

root cause java.lang.RuntimeException: Failed to locate wiki descriptor for alias [localhost] org.xwiki.url.internal.standard.AbstractWikiReferenceExtractor.getWikiDescriptorByAlias(AbstractWikiReferenceExtractor.java:80) org.xwiki.url.internal.standard.DomainWikiReferenceExtractor.resolveDomainBasedWikiReference(DomainWikiReferenceExtractor.java:61)

root cause org.xwiki.query.QueryException: Exception while executing query. Query statement = [ select doc.fullName from XWikiDocument as doc , BaseObject as _o1 where ( doc.object ( XWiki.XWikiServerClass ) . server = :wikiAlias and doc.name like 'XWikiServer%' ) and doc.fullName=_o1.name and _o1.className='XWiki.XWikiServerClass' ] com.xpn.xwiki.store.hibernate.query.HqlQueryExecutor.execute(HqlQueryExecutor.java:175) org.xwiki.query.internal.DefaultQueryExecutorManager.execute(DefaultQueryExecutorManager.java:72) org.xwiki.query.internal.DefaultQuery.execute(DefaultQuery.java:287) org.xwiki.query.xwql.internal.XWQLQueryExecutor.execute(XWQLQueryExecutor.java:118)

root cause java.lang.NullPointerException org.hibernate.hql.ast.HqlSqlWalker.lookupProperty(HqlSqlWalker.java:560) org.hibernate.hql.antlr.HqlSqlBaseWalker.addrExpr(HqlSqlBaseWalker.java:4774) org.hibernate.hql.antlr.HqlSqlBaseWalker.expr(HqlSqlBaseWalker.java:1326)